command lpirf is unrecognized

[Stan Peterburgsky]

Hello,

I would like to use a command but it is unrecognized and not found at SSC. I am running Stata 15, and the command may be newer. Is there any way to run it?

. lpirf Ret10 RD10 , lags(1/8) step(20)
command lpirf is unrecognized
r(199);

. ssc install lpirf
ssc install: "lpirf" not found at SSC, type search lpirf
(To find all packages at SSC that start with l, type ssc describe l)
r(601);

Thank you,
Stan

[Nick Cox]

It's an official command introduced in Stata 18. https://www.stata.com/new-in-stata/l...nse-functions/


It didn't grow out of anything on SSC, which these days would be a rare thing.

[Stan Peterburgsky]

OK, thank you. So does that mean that I can't use it unless I have Stata 18 or newer?

[Nick Cox]

Correct.